Good Morning New Mother and again Welcome to our wonderful forum.
I hope you are become more relaxed with these feelings and your anxiety has decreased some with the Valium.
All new mothers are somewhat anxious. Being a mother is a new role, a new job, with a new person in your life and new, responsibilities. Anxiety in response to this situation is very common. Pediatricians, obstetricians, and nurses are used to worries, concerns, and questions like yours.
I understand your fears and concerns, when you feel something is not quite right, you go with your intution and get a good physical. Be very frank with your physician and remember you have patients rights. Ask for what you feel you need and don't be blown off with getting some reason for what your experiencing.
Remember each person is different and others experiences will be very different from yours.